1 /*

     2  * Copyright (c) 2017, 2018, Red Hat, Inc. All rights reserved.

     3  *

     4  * This code is free software; you can redistribute it and/or modify it

     5  * under the terms of the GNU General Public License version 2 only, as

     6  * published by the Free Software Foundation.

     7  *

     8  * This code is distributed in the hope that it will be useful, but WITHOUT

     9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    10  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    11  * version 2 for more details (a copy is included in the LICENSE file that

    12  * accompanied this code).

    13  *

    14  * You should have received a copy of the GNU General Public License version

    15  * 2 along with this work; if not, write to the Free Software Foundation,

    16  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    17  *

    18  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    19  * or visit www.oracle.com if you need additional information or have any

    20  * questions.

    21  *

    22  */

    23 

    24 /*

    25  * @test TestPeriodicGC

    26  * @summary Test that periodic GC is working

    27  * @key gc

    28  * @requires vm.gc.Shenandoah

    29  * @library /test/lib

    30  * @run driver TestPeriodicGC

    31  */

    32 

    33 import java.util.*;

    34 

    35 import jdk.test.lib.Asserts;

    36 import jdk.test.lib.process.ProcessTools;

    37 import jdk.test.lib.process.OutputAnalyzer;

    38 

    39 public class TestPeriodicGC {

    40 

    41     public static void testWith(String msg, boolean periodic, String... args) throws Exception {

    42         String[] cmds = Arrays.copyOf(args, args.length + 2);

    43         cmds[args.length] = TestPeriodicGC.class.getName();

    44         cmds[args.length + 1] = "test";

    45         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(cmds);

    46 

    47         OutputAnalyzer output = new OutputAnalyzer(pb.start());

    48         output.shouldHaveExitValue(0);

    49         if (periodic && !output.getOutput().contains("Trigger: Time since last GC")) {

    50             throw new AssertionError(msg + ": Should have periodic GC in logs");

    51         }

    52         if (!periodic && output.getOutput().contains("Trigger: Time since last GC")) {

    53             throw new AssertionError(msg + ": Should not have periodic GC in logs");

    54         }

    55     }

    56 

    57     public static void main(String[] args) throws Exception {

    58         if (args.length > 0 && args[0].equals("test")) {

    59             Thread.sleep(5000); // stay idle

    60             return;

    61         }

    62 

    63         String[] enabled = new String[] {

    64                 "adaptive",

    65                 "compact",

    66                 "static",

    67                 "traversal",

    68         };

    69 

    70         String[] disabled = new String[] {

    71                 "aggressive",

    72                 "passive",

    73         };

    74 

    75         for (String h : enabled) {

    76             testWith("Short period with " + h,

    77                     true,

    78                     "-Xlog:gc",

    79                     "-XX:+UnlockDiagnosticVMOptions",

    80                     "-XX:+UnlockExperimentalVMOptions",

    81                     "-XX:+UseShenandoahGC",

    82                     "-XX:ShenandoahGCHeuristics=" + h,

    83                     "-XX:ShenandoahGuaranteedGCInterval=1000"

    84             );

    85 

    86             testWith("Long period with " + h,

    87                     false,

    88                     "-Xlog:gc",

    89                     "-XX:+UnlockDiagnosticVMOptions",

    90                     "-XX:+UnlockExperimentalVMOptions",

    91                     "-XX:+UseShenandoahGC",

    92                     "-XX:ShenandoahGCHeuristics=" + h,

    93                     "-XX:ShenandoahGuaranteedGCInterval=100000" // deliberately too long

    94             );

    95         }

    96 

    97         for (String h : disabled) {

    98             testWith("Short period with " + h,

    99                     false,

   100                     "-Xlog:gc",

   101                     "-XX:+UnlockDiagnosticVMOptions",

   102                     "-XX:+UnlockExperimentalVMOptions",

   103                     "-XX:+UseShenandoahGC",

   104                     "-XX:ShenandoahGCHeuristics=" + h,

   105                     "-XX:ShenandoahGuaranteedGCInterval=1000"

   106             );

   107         }

   108     }

   109 

   110 }